Advances in modern materials science and thermal engineering have enabled us to precisely shape and control the temperature field of an object's surface, creating localized thermal environments that transcend natural experience. This provides an ideal experimental platform for studying human thermal perception. By establishing a stable, directional temperature gradient on a single conductor, we can make different parts of the same object exhibit drastically different thermal states. When the human hand, a sophisticated biosensor, comes into contact with this, the "contradictory" information collected by its distributed network of temperature receptors conflicts with the temperature model in the brain based on everyday experience, thus sparking cognitive curiosity and exploration. The "Knowing Cold and Hot" exhibit is a clever application of this principle. In this 1200*650*1050mm device, a special metal tube, under the action of a hidden temperature control system, maintains a constan
